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Robust Weak Supervision with Variational Auto-Encoders

ICML 2023 · Label-efficient and robust learning › Recognition and long-tail · approach: Contrastive representation theory

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use WS-VAE (joint VAE with adaptive weak-label decoder) instead of baselinesweak supervision on Wrench benchmark · 6 Wrench binary datasetsF1-scoreMixed
Adding weak-label decoder and VAE joint training (WS-VAE) under accuracy degradation of LFsYouTube with 50% noisy weak labels · YouTube accuracy-degradation simulationclassification accuracy: about 9% over second best (MV+BERT)Helped
WS-VAE vs baselines under random combined LF degradations6 Wrench datasets, 300 conditions · random LF degradation (accuracy, coverage, correlation)macro F1-score: average improvement 0.057 over best baseline in each experiment; best in 66.3% of conditionsHelped
Unsupervised VAE-based joint modelling with coverage-robust inference (no ground-truth labels)YouTube with varying abstained labels · YouTube coverage degradationclassification accuracyHelped
Adding randomly labelling correlated LF copies (stress test) to WS-VAEYouTube with appended random LF copies · YouTube correlation degradationclassification accuracyHelped
Advantage of WS-VAE is largest when raw majority vote F1 is lowWS-VAE vs best baseline across conditions · F1 vs raw majority vote qualitymacro F1-scoreHelped

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